FW 190D-9 cowling flaps

[Yankee_One]

Hi,

 

i know the engine cowling flaps are automated in the Dora. Sure they can be opened / closed manually.

 

Is there a new key command for opening them manually or isnt that possible!

 

Thanks for any constuctive answer!

[BlitzPig_EL]

Coolant radiator axis.  That's what works.   Same control I use for rads on Yaks, Migs, LaGG, etc.

 

Go to external view with plane on ground in QMB, and start moving your controls until you see the cowl flaps move...  It's the control for radiators.

 

[Yankee_One]

Thanks buddy!

 

Going to try it.

[Finkeren]

Yep, confused med for about 5 second as well. Thing is, while they're technically cowl flaps - in that they are flaps that sit on the cowling - opening them feeds a liquid coolant radiator system, rather than just letting more air flow over the engine block. Therefore they are operated by the "water radiator" control and not the "cowl flaps" control like on an air cooled engine. 

Edited March 19, 2019 by Finkeren

[Semor76]

27 minutes ago, Yankee_One said:

Thanks buddy!

 

Going to try it.

Did that worked for you?

[Yankee_One]

48 minutes ago, Semor76 said:

Did that worked for you?

 Hi Semor,

 

yes it did. It works well.

[CUJO_1970]

There is a reason they used the big annular radiators on the Dora instead of something more streamlined - it's the same system for Ta-152 and for 190D-11 thru D-13. That's a lot of power and a lot of heat to get rid of, at the expense of a little more drag.

 

I also thought at first it would be mapped to cowling flaps without thinking first about how the system actually worked. It is absolutely correct to map to radiator considering how the system works.

[EpeeNoire]

1 hour ago, CUJO_1970 said:

There is a reason they used the big annular radiators on the Dora instead of something more streamlined - it's the same system for Ta-152 and for 190D-11 thru D-13. That's a lot of power and a lot of heat to get rid of, at the expense of a little more drag.

 

I also thought at first it would be mapped to cowling flaps without thinking first about how the system actually worked. It is absolutely correct to map to radiator considering how the system works.

actually, the main reason they went for an annular radiator design was first of all, because the junkers flugmotorenwerke basically designed the engine to work with one (cause it would make for a rather compact design of an engine cell, overall) and second, because they didnt want to make too many alterations to the airframe of the plane itself. fw 190 antons have a round body, so why change that if not necessary.

 

also, a hotfix that is concerning the flaps has just been released:

21 minutes ago, Sneaksie said:

Hotfix just released:

1. Dora: radiator flaps won't fluctuate with maximum amplitude in warm weather with in-game assist turned on.
2. Dora: active engine assist won't limit the throttle at altitudes higher than 6 km.
3. Dora is trimmed now. 

4. M4A2 and Pz.III-M damage models corrected.

5. Numerous minor changes in texts.

 

Edited March 19, 2019 by EpeeNoire

[CUJO_1970]

OMG, they trimmed the Dora out and here I am stuck at work - can't wait to get home and fly that beast!

[EAF19_Marsh]

I presume that it also makes the engine sligtly more robust if the radiator is next to the main body, as opposed to being several feet away and connected by long feed / return pipes. Similar for the chin radiator on the Typhoon / Tempest.

[Bremspropeller]

I think one of he major factors as to why they decided to go for the annular radiator design was ease of maintenence - specifically replacement of the engine assy as a whole.

Not having to fiddle with additional connectors for oil and coolant-lines to some remote places elsewhere in the airframe drastically shortened the required manhours for engne-replacements. It also enabled the designers to go for alternative engine types. In fact, the Jumo 213 was designed to fit DB 603 engine mounts and accessories from the get-go.

 

Junkers started the annnular radiator design with the Ju 88/ Jumo 211 combination, which was an in-house airframe mated to an in-house engine.

 

The DB 603 (which was supposed to be installed on the Fw 190D-14 and D-15 - both were effectively cancelled before production would begin - and the Ta 152C) had a very similar annular radiator design in many aircraft. The Do 335 used the same annular radiator design with it's forward DB 603. So did the He 219.

 

[danjama]

There's a name I haven't seen in a long time!

[EAF19_Marsh]

Interesting that this fell out of fashion given that it has advantages and was common 1914-18.

[pencon]

Been trying to  manually operate my cowl flaps on the  D9 . Anyone know what its listed under . Fw190d9 Cowl Flap control .I have every  cowl flap exit mapped but nothing is  working . Thanks in advance ! 

[Jaegermeister]

This...

[easterling77]

 

you may are searching this one?....sorry it's "Deutsch" here?

3 minutes ago, Jaegermeister said:

This...

you were faster sir and this is more precise than my screenshot^^

Edited April 21, 2023 by easterling77

[pencon]

They must have changed since 2019 . There is no setting called water radiator control

[LukeFF]

2 minutes ago, pencon said:

There is no setting called water radiator control

 

Yes, yes there is. 

[pencon]

Yes theres   water  radiator control . My bad . I got the manual /auto  working , but I can't control the  opening and closing  in the manual function . I did get it to where it shows a percentage of the cowl opening and closing on the screen  but it either opens all the way or closes all the way

Edited April 21, 2023 by pencon

[easterling77]

hm...maybe also linked to an axis which conflicts?

[RyanR]

20 hours ago, pencon said:

Yes theres   water  radiator control . My bad . I got the manual /auto  working , but I can't control the  opening and closing  in the manual function . I did get it to where it shows a percentage of the cowl opening and closing on the screen  but it either opens all the way or closes all the way

 

It may just be a problem with the manual/auto distinction. I found that I had load of problems with all sorts of auto/manual things (mixture/cooling/RPM's/etc) until I went full realism with the settings panel.

 

I usually set the coolant flow to 10-15% and leave it. The cowl flaps themselves are always "automatic", and at this setting, they stay nearly closed until your speed gets lower and you're applying lots of power. If you set the coolant flow to more than 25%, it seems like they're always open.

 

-Ryan

[Supercharger]

On 4/22/2023 at 6:49 PM, RyanR said:

If you set the coolant flow to more than 25%

You set the temperature range of the coolant thermostat, which in turn controls the cowl flap actuator.

But you can not control coolant flow or cowl flaps(except manually full open and close) directly. 

[69th_chuter]

From a report of a 2 Mar '45 test of aircraft 210006:

 

"The influence of the radiator flap position on speed (with empty drop tank) was determined at 6,562 feet with 2700 rpm, (see sheet 7, Fig.e). The entire opening was divided into 10 equal parts, "0 = completely down" and "10 = completely up". The test shows that the speeds are greatest with a 2,3 radiator flap position (approx. flush), i.e. the speed loss is lowest. If possible, level flight should be flown at this position."

 

Two things to note here are 1) least drag is not 0% but 23% (~even with the right side fixed flap) and 2)it seems odd a recommendation would be made to operate the aircraft cooling system in a way that isn't possible.